<!-- 侧栏导航 -->
<div id="sub_nav" class="box">
  <div class="top"><h3><span>关于美冠</span></h3></div>
  <div class="content">
    <ul>
      <li data-nav_item_id=" 44" class="selected" >
        <a href="/about.html" title="关于美冠">关于美冠</a>
      </li>
      <li data-nav_item_id=" 45" >
        <a href="/about.html" title="发展历程">发展历程</a>
      </li>
      <li data-nav_item_id=" 46" >
        <a href="/about.html" title="企业文化">企业文化</a>
      </li>
      <li data-nav_item_id=" 47" >
        <a href="/about.html" title="员工活动">员工活动</a>
      </li>
      <li data-nav_item_id=" 48" >
        <a href="/about.html" title="人才招聘">人才招聘</a>
      </li>
    </ul>
  </div>
</div>